# 中国最好大学实例排名优化
import requests
import bs4
import io
import sys
sys.stdout = io.TextIOWrapper(sys.stdout.buffer,encoding='utf-8')
from bs4 import BeautifulSoup

def getHTMLText(url):
	try:
		r = requests.get(url,timeout=30)
		r.raise_for_status()
		r.encoding = r.apparent_encoding
		return r.text
	except:
		return ""

def fillUnivList(ulist,html):
	soup = BeautifulSoup(html,'html.parser')
	for tr in soup.find('tbody').children:
		if isinstance(tr,bs4.element.Tag):
			tds = tr('td')
			ulist.append([tds[0].string,tds[1].string, tds[3].string])

def printUnivList(ulist,num):
	# 用 chr(12288) 中文空格填充，解决中文输出不对齐问题
	tplt = "{0:^10}\t{1:{3}^10}\t{2:^10}"
	print(tplt.format("排名","学校","分数",chr(12288)))
	for i in range(num):
		u = ulist[i]
		print(tplt.format(u[0],u[1],u[2],chr(12288)))


def main():
	uinfo = []
	url = 'http://www.zuihaodaxue.com/zuihaodaxuepaiming2016.html'
	html = getHTMLText(url)
	fillUnivList(uinfo,html)
	printUnivList(uinfo,20)

if __name__ == '__main__':
	main()